Related Resources: hardware
BS EN ISO 10642 Hexagon socket countersunk head screws
Engineering ANSI Hardware Design Data
Engineering Metric Hardware Design Data
BS EN ISO 10642 Hexagon socket countersunk head screws
Dimensions: Note: Symbols and designations of dimensions are defined in ISO 225.
BS EN ISO 10642 Sizes Table Dimensions in mm
Thread size, d
|
M3
|
M4
|
M5
|
M6
|
M8
|
M10
|
M12
|
(M14)g
|
M16
|
M20
|
||
Pa
|
0.5
|
0.7
|
0.8
|
1
|
1.25
|
1.5
|
1.75
|
2
|
2
|
2.5
|
||
bb
|
ref.
|
18
|
20
|
22
|
24
|
28
|
32
|
36
|
40
|
44
|
52
|
|
da
|
max.
|
3.3
|
4.4
|
5.5
|
6.6
|
8.54
|
10.62
|
13.5
|
15.5
|
17.5
|
22
|
|
dk
|
theoretical max.
|
6.72
|
8.96
|
11.20
|
13.44
|
17.92
|
22.40
|
26.88
|
30.8
|
33.60
|
40.32
|
|
actual min.
|
5.54
|
7.53
|
9.43
|
11.34
|
15.24
|
19.22
|
23.12
|
26.52
|
29.01
|
36.05
|
||
ds
|
max.
|
3.00
|
4.00
|
5.00
|
6.00
|
8.00
|
10.00
|
12.00
|
14.00
|
16.00
|
20.00
|
|
min.
|
2.86
|
3.82
|
4.82
|
5.82
|
7.78
|
9.78
|
11.73
|
13.73
|
15.73
|
19.67
|
||
ec,d
|
min.
|
2.303
|
2.873
|
3.443
|
4.583
|
5.723
|
6.863
|
9.149
|
11.429
|
11.429
|
13.716
|
|
k
|
max.
|
1.86
|
2.48
|
3.1
|
3.72
|
4.96
|
6.2
|
7.44
|
8.4
|
8.8
|
10.16
|
|
Fe
|
max.
|
0.25
|
0.25
|
0.3
|
0.35
|
0.4
|
0.4
|
0.45
|
0.5
|
0.6
|
0.75
|
|
r
|
min.
|
0.1
|
0.2
|
0.2
|
0.25
|
0.4
|
0.4
|
0.6
|
0.6
|
0.6
|
0.8
|
|
nom.
|
2
|
2.5
|
3
|
4
|
5
|
6
|
8
|
10
|
10
|
12
|
||
s
|
max.
|
2.08
|
2.58
|
3.08
|
4.095
|
5.14
|
6.140
|
8.175
|
10.175
|
10.175
|
12.212
|
|
min.
|
2.02
|
2.52
|
3.02
|
4.020
|
5.02
|
6.020
|
8.025
|
10.025
|
10.025
|
12.032
|
||
t
|
min.
|
1.1
|
1.5
|
1.9
|
2.2
|
3
|
3.6
|
4.3
|
4.5
|
4.8
|
5.6
|
|
w
|
min.
|
0.25
|
0.45
|
0.66
|
0.7
|
1.16
|
1.62
|
1.8
|
1.62
|
2.2
|
2.2 |